Methylation of phytohormones by the SABATH methyltransferases  

作　　者：QU LiJia LI Shuang XING ShuFan 

机构地区：[1]National Laboratory of Protein Engineering and Plant Genetic Engineering, College of Life Sciences, Peking University, Beijing 100871, China, [2]The National Plant Gene Research Center (Beijing), Beijing 100101, China

出　　处：《Chinese Science Bulletin》2010年第21期2211-2218,共8页

基　　金：supported by the National Natural Science Foundation of China(90717003)

摘　　要：In plants,one of the most common modifications of secondary metabolites is methylation catalyzed by various methyltransferases. Recently,a new class of methyltransferases,the SABATH family of methyltransferases,was found to modify phytohormones and other small molecules.The SABATH methyltransferases share little sequence similarity with other well characterized methyltransferases.Arabidopsis has 24 members of the SABATH methyltransferase genes,and a subset of them has been shown to catalyze the formation of methyl esters with phytohormones and other small molecules.Physiological and genetic analyses show that methylation of phytohormones plays important roles in regulating various biological processes in plants,including stress responses,leaf development,and seed maturation/germination.In this review,we focus on phytohormone methylation by the SABATH family methyltransferases and the implication of these modifications in plant development.In plants, one of the most common modifications of secondary metabolites is methylation catalyzed by various methyltransferases Recently, a new class of methyltransferases, the SABATH family of methyltransferases, was found to modify phytohormones and other small molecules. The SABATH methyltransferases share little sequence similarity with other well characterized methyl- transferases. Arabidopsis has 24 members of the SABATH methyltransferase genes, and a subset of them has been shown to catalyze the formation of methyl esters with phytohormones and other small molecules. Physiological and genetic analyses show that methylation of phytohormones plays important roles in regulating various biological processes in plants, including stress responses, leaf development, and seed maturation/germination. In this review, we focus on phytohormone methylation by the SABATH family methyltransferases and the implication of these modifications in plant development.

关 键 词：甲基化 甲基转移酶 激素 植物生长发育 次生代谢产物 生理过程 遗传分析 应激反应 

分 类 号：Q946[生物学—植物学]